Sample Appcelerator Alloy Application with a sample widget. The widget was based on the same approach used for the com.appcelerator.searchForBooks widget but this one integrates twitter and I have added some comments in the code
which made the whole process clearly for me. Hope someone finds this helpful.

Here is the Appcelerator documentation on widgets

https://github.com/appcelerator/alloy#building-re-usable-application-widgets